Pump drive



Aug. 18, 1953 M. w. GUYER 2,648,986

PUMP DRIVE Filed June 15. 1949 4 Sheets-Sheet 1 IN V EN TOR.

Atty

Aug. 18, 1953 M. w. GUYER 2,643,986

PUMP DRIVE Filed June 13. 1949 4 Sheets-Sheet 2 INVENTOR. Harm's BY Any.

Aug. 18, 1953 w, GUYER 2,648,986

PUMP DRIVE Filed June 13. 1949 4 Sheets-Sheet 3 INVEN TOR. [701/213 MGage Aug. 18, 1953 M. w. GUYER v ,6

PUMP DRIVE Filed June 15. 1949' 4 Sheets-Sheet 4 IN VEN TOR.

Airy. 1.

Patented Aug. 1 8, 1953 UNITED P The-present invention relates toimprovements i-iai pllmp -drive;

I .is;:theprinoipal'purpose of my invention togprovidean improvedpumpanddrivethat particularly useful -in-,handl-ing liquid suspensions of=pow-dered: materials that tend tosettle out; oneiparticulareuse ofrthepumpis in connection with'ithe treating of seeds; It is the practice nowin rmanyzseed treatments toemploy an active chemical inc powderedtform-.- The amount ofrchemicalinproportion to the amount of seedrciexfii melyi small, so it becomes necessary to dilutethe'chemical with aninert powder that acts asga; carrier to furth'er distribution of thechemical. As a iurther means ofpreventing waste and inj uryato the;health of-;-th'eoperators; the active j chemical-andinertpowderissuspended in a liquid" such as water or oil-,j to form what is termed aurry,

In. seedtreating; this slurry is agitated to maintain the suspension ofthe-powders and is then .,-measured-out and dischargeduponthe seed andthoroughly mixed therewith to get as uniform distribution as possible.The powdered ma terilSare-oftien: abrasive and are invariably diflicultto maintain-in suspension. The pump and,

drive mechanismof the lpresent invention isparticularlylapplicable tothe handling of this type of piQdfi'f Mor'fparti'cularly it is- -thepurpose of my' in.-- vefit'ionftoff'provide. a'pump' wherein the actualliqui'd movingf'parts of the pump are arranged,- in' a; 'h'ousingfwhichiis'Yeasi1y, 'openedfand drained and thebearin'gs' and drive mechanismare so mounted as to be clear of the liquid "at all" tithes" andfnjodisturbed by: the openingiof the pump? for"rem'o val of1' anyfaccumulation of powdered material therein:

It is a further purpose ofmy invention" to pro pump-isj attached.

Mfurtherpurpose of ="th'einvention is "to pro videa---novelfpumpconstruction whereifithe interior 'oithe'pu'mpis open totheatmosphere during operation even though the-pump may'have to raisethe liquidssothat it is working against" ahad pressure considerablyaboveatmospheric pressure' Thei nature and advantages of my invention will appear more fully iromthe following descrip-- tionand theaccompanying drawingswherein a preferredembodiment of the invention isshown;

ltwi-ll be readily appreciatedg however; that minor changes? andimprovements may be made inthe construction twithout departing from thescope of the-invention as defined by the-claims;

ln -the drawings: Figure 1 isan end view of a seed treating ma chine ofthe -type-referred to above, illustrating my improved-pump in connectiontherewith;

Figure-2 is an enlarged fragmentary view taken on-the line;22 ofFigure-1 illustrating the drive" mechanism- 0f the: pump;

Figure -3 is asectional-view'taken on the line. El -430i Figure2-showing-the upper, or drive, end- Figure-4 is a fragmentarysectionalview taken on'the line -4+4 of Figure 2;

Figure 5 is aside view of thelower end of the Figure 6is a sectionalView taken on the .line 6*? of Figure 5;

Eigure 'Iis abottom View looking up at Figure 6 on; the line-'l-l-oiFigure 6 with the bottom closure removed; and

Figure-8 is a plan-viewof the pumpimpeller.

Referring now to Figure 1, my pump is shown in connection--witha seedtreatingmachine to illustrateone of the applications. However, it shouldbeunderstood that the use of the pump is; not 'limited to seedrtr'eatingas it may be applied wherever the characteristics embodied in the pumpare of'advantage. The seed treating machine includes a seed hopper iii,a-v mixing trough ll, aslurry mixingatank l 2, a slurry dise tributingmeans', which is hidden by, the hopper lfl'in Figure. 1. and a slurryoverflow return |3- to theltank l2. A machine of this character is"shown-J in my prior patent application, Serial Number-f787,1 34, filedNovember 20, 1947, Patent N6;12,c0o;641 dated June 17, 1952.

In machines of this character the slurry is pumped from the bottom ofthe tank I2 through a hose i i-into the slurry distributor whichemebodiesa' measuring device; The' flow of'slurry to the distributor iscontinuous and any overflow from-"the measuring device is returned tothe tank I2. A'motor I5- operates a mii cingscrew "m 'the mixing troughH'by means of a V belt I Wandpulleys l 1 and* i 8; The stirring mecha-'nism forthe slurry in the tank lZ-is-driven by a pulleyand'belt take-ofifrom the pulley l8? This take oiiincludesa pulley IS, a belt 23' and apulley 2|. These'parts are merely'described toexplainthe' application ofmy improvedpump 2 2" and its' drive meohanismtoaparticular Ina-- china-4 The-pump-22 embodies amain p tubular column members 24 and 25 and adrive mechanism 26 for taking power from a belt such as the belt IS. Theoutlet hose I4 is connected to the housing 23 and an outlet connection2? from the tank |2 is connected by a flexible hose 28 to the bottomclosure unit 29 of the pump 22.

Figures 2, 3 and 4 illustrate the upper end of pump and the drivemechanism. A shaft 30 18 mounted in the tubular members 24 and 25 bybearings 66 and 61 and a sealing member 68. The bearings 66 and 61 areseated in a member 25, while the sealing member 68 is seated in themember 24. A grease cup 69 is provided in the member 25 to supply oilfor the bearings 66 and Bl. The member 24 has an aperture Ill thereinclose to the top thereof. The members 24 and 25 are telescoped at theirmeeting ends and clamped together by a clamp ring II to make a tightjoint.

A drive wheel 3| is fixed on the reduced upper end of the shaft 30 by aset screw 32. The drive member 3| rests on the inner race of the bearing66 and supports the shaft 30 at the proper level. A mounting bracket 33is clamped to the top end of the member 25 and supports two rollers 34and 35 which cooperate with the wheel 3| to cause the belt Hi to drivethe wheel. As shown, the roller 35 is positioned to press the belt l6against the wheel 3|. by an eccentric hub 36 and a bolt 31 so that itcan be adjusted toward and away from the wheel 3|. For a given belt sizethis provides a means to vary the speed of the pump somewhat by changingthe level of the belt on the tapered surface of the wheel. Thisconstruction also enables one to set the roller 35 and wheel 3| fordifferent sizes of belts It. The roller 34 is mounted by a likeeccentric hub 38 and a bolt 39 so that it may be raised and lowered withrespect to the wheel 3|. It will be noted from Figure 2 that the roller34 is off-set lengthwise of the belt Hi from the wheel 3| and isadjusted to press the belt l6 down into the passage between the wheel SIand the roller 35 the necessary amount to provide the driving engagementbetween the belt l6 and the wheel 3|.

The pump housing 23 is fixed on the lower end of the member 24 and has arecess 40 for a pump impeller 4| that is fitted on the lower end of theshaft 30 (see Figure 6). The shaft 30 holds the impeller 4| slightlyabove the open bottom face of the housing 23 as indicated by the spaceat 42 in Figure 6. The fluid outlet from the impeller 4! is through achannel 43 in the housing 23 to a pipe 44. The open lower face of thehousing 23 is closed by the member 29 which has an inlet passage 45opened centrally beneath the impeller 4|.

As shown best by Figures 5, 6 and 7, the parts 23 and 29 are securedtogether in such a fashion that they may be readily separated to gainaccess to the interior of the pump. The parts have opposite flanges 46and 41. The flange 46 has two locating ears 48 which receive an upturnedear 49 on the flange 41. A yoke 50 is provided with in-turned ends 5|and 52 to engage over the flange 46 of the housing 23. The flange 46 hasseats at 54 and 55 for properly positioning the yoke. The member 29 hasa downwardly facing boss 56 which is recessed at 51 to receive the upperend of a screw bolt 58 that is threaded into the yoke 50. It is evidentthat by turning the screw bolt 58 back, the yoke 50 can be lifted Theroller 35 is mounted 4 off the member 23 so that the member 29 dropsdown to open up the interior of the pump.

The pump impeller 4| is composed of a lower outer ring 60, a central hub59 and a plurality of upstanding vanes 6|, 62 and 63 arrangedequidistant from each other. The vanes are notched as indicated at 64and 65 in Figure 6.

The pipe 44 is connected to a three-way valve 12 which is coupled to thehose I4. The valve i2 has a drain outlet at T3. The hose l4 can bedrained without opening the outlet of the pump. Also the valve connectsthe hose to the pump with the drain closed and can be set to drain boththe pump and the hose.

It is believed to be evident from the foregoing description that I haveprovided a pump and drive mechanism wherein the pump itself can besubmerged in and operated in the slurry with the drive mechanism and thebearing for the pump shaft entirely free from contact with the slurry.The pump and impeller construction operates to supply the slurry withthe interior of the tubular member 24 above the pump impeller open toatmospheric pressure at all times. The openin 76 provides communicationfrom the exterior to the space over the pump impeller. It is a peculiarcharacteristic of this construction that in operation the slurry is fedin through the inlet conduit 45 and discharged by centrifugal forcethrough the passage 43 to the pipe 44. So long as the pump is operatingthe slurry does not build up in the tube 24. The inlet flow through theinlet opening 45 is somewhat restricted by the hub 59 of the pumpimpeller and the slurry which does enter the pump housing 23 isimmediately driven by centrifugal force through the outlet channel 43.When the pump is stopped, there is a certain amount of slurry in thehose M which flows back and builds up somewhat into the tubular member24 but the opening 10 is above the slurry level in the tank l2 so thatthe slurry does not escape through the opening 78.

From the foregoing description it is believed that the nature andadvantages of my invention will be apparent to those skilled in the art.

Having thus described my invention, I claim:

1. Drive mechanism adapted to drive the shaft of a pump from a portionof a V-belt intermediate its supportin pulleys comprising a supportingcolumn for said shaft, a bearing for said shaft in the upper end of saidcolumn, a drive wheel fixed on the shaft above the bearing, said drivewheel having a peripheral face for engaging a V-belt, a V-belt supportedin tangential engagement with said peripheral face, a bracket on saidcolumn, a roller on said bracket having a peripheral face opposite theperipheral face of the drive wheel, the roller having its axis in acommon plane with the axis of the drive wheel, the adjacent faces of theroller and the wheel in said plane being at substantially the same angleto each other as are the opposed driving faces of the V-belt to eachother to urge the belt against said drive wheel, and a second roller onsaid bracket bearing on the outer surface of the belt to press itagainst the faces of the drive wheel and the first named roller.

2. Drive mechanism adapted to drive the shaft of a pump from a portionof a V-belt intermediate its supporting pulleys comprising a supportingcolumn for said shaft, a bearing for said shaft in the upper end of saidcolumn, a drive Wheel fixed on the shaft above the bearing, said drivewheel having a peripheral face for engaging a,

V-belt, a V-belt supported in tangential engagement with said peripheralface, a bracket on said column and guide rollers mounted on saidbracket, one of said rollers engaging the side of said belt most remotefrom the peripheral face of the wheel and the other roller riding on theouter surface of the belt to press the belt against the drive wheel.

3. Drive mechanism adapted to drive the shaft of a pump from a portionof a V-belt intermediate its supporting pulleys comprising a supportingcolumn for said shaft, a bearingfor said shaft in the upper end of saidcolumn, a drive wheel fixed on the shaft above the bearing, said drivewheel having a peripheral face for engaging a V-belt, a V-belt supportedin tangential engagement with said peripheral face, and members carriedby said column adjustable with respect to the drive wheel for guidingthe belt into driving engagement with the peripheral face of said Wheel,said members comprising a roller on the opposite side of the belt fromsaid wheel, an eccentric mounting said roller for adjustment toward andaway from the wheel, and a second roller riding on the outer face of thebelt in advance of the point of engagement of the belt with the wheel.

MORRIS W. GUYER.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 1,072,650 Price Sept. 9, 1913 1,074,794 Hunt Oct. 7, 19131,361,958 Black Dec. 14, 1920 1,883,266 Yoder Oct. 18, 1932

